Unit One 1
Unit Two 5
Unit Three 9
Unit Four 13
Unit Five 17
Unit Six 21
Unit Seven 25
Unit Eight 29
Test One 33
Unit Nine 37
Unit Ten 42
Unit Eleven 45
Unit Twelve 49
Unit Thirteen 53
Unit Fourteen 58
Unit Fifteen 62
Unit Sixteen 66
Test Two 70
SUPPLEMENTARY EXERCISES 75
Exercise One 75
Exercise Two 78
Exercise Three 80
Exercise Four 82
Exercise Five 84
Exercise Six 87
Exercise Seven 90
Exercise Eight 93
Exercise Nine 96
Exercise Ten 99
ANSWER KEYS AND TAPESCRIPTS 101
Unit One 101
Unit Two 102
Unit Three 104
Unit Four 105
Unit Five 107
Unit Six 108
Unit Seven 110
Unit Eight 111
Test One 113
Unit Nine 115
Unit Ten 117
Unit Eleven 118
Unit Twelve 120
Unit Thirteen 122
Unit Fourteen 123
Unit Fifteen 125
Unit Sixteen 126
Test Two 128
ANSWER KEYS TO SUPPLEMENTARY EXERCISES 130
Exercise One 130
Exercise Two 132
Exercise Three 133
Exercise Four 133
Exercise Five 134
Exercise Six 135
Exercise Seven 136
Exercise Eight 138
Exercise Nine 138
Exercise Ten 139